http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Isham, Amy (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
Isham Alzoubi,Mahmoud R. Delavar,Farhad Mirzaei,Babak Nadjar Arrabi 한국자원공학회 2018 Geosystem engineering Vol.21 No.2
Land leveling is one of the most important steps in soil preparation for consequent objectives. Parallel policies need to take both energy and environmental subjects into the account as well as certain financial development and eco-friendly protection. The objective of this research was to develop the five methods of GA-ANN, ICA-ANN, PSO-ANN, sensitivity analysis, and ANFIS to predict the environmental indicators for land leveling. In this study, several soil properties such as soil, cut/fill volume, soil compressibility factor, specific gravity, moisture content, slope, sand percent, and soil swelling index were investigated that are the main affecting parameters in energy consumption through land leveling. A total of 90 samples were prepared from three land areas. Acquired data were used to develop accurate models for Labor, LE (Labor Energy), FE (Fuel Energy), TMC (Total Machinery Cost), and TME (Total Machinery Energy). Results of sensitivity analysis showed that only three parameters of soil compressibility, density of soil, and cut/fill volume had significant effects on energy consumption. The results showed among the mentioned methods for estimating the amount of energy required in different parts such as labor, fuel, and machinery, GA-ANN and ICA-ANN methods were more precise than others. The sensitivity analysis method was the least accurate. Finally, it was concluded that the GA-ANN method was the best due to its high R2 and low RMSE values.
-
A Review of Mercury Exposure and Health of Dental Personnel
Nagpal, Natasha,Bettiol, Silvana S.,Isham, Amy,Hoang, Ha,Crocombe, Leonard A. Occupational Safety and Health Research Institute 2017 Safety and health at work Vol.8 No.1
Considerable effort has been made to address the issue of occupational health and environmental exposure to mercury. This review reports on the current literature of mercury exposure and health impacts on dental personnel. Citations were searched using four comprehensive electronic databases for articles published between 2002 and 2015. All original articles that evaluated an association between the use of dental amalgam and occupational mercury exposure in dental personnel were included. Fifteen publications from nine different countries met the selection criteria. The design and quality of the studies showed significant variation, particularly in the choice of biomarkers as an indicator of mercury exposure. In several countries, dental personnel had higher mercury levels in biological fluids and tissues than in control groups; some work practices increased mercury exposure but the exposure levels remained below recommended guidelines. Dental personnel reported more health conditions, often involving the central nervous system, than the control groups. Clinical symptoms reported by dental professionals may be associated with low-level, long-term exposure to occupational mercury, but may also be due to the effects of aging, occupational overuse, and stress. It is important that dental personnel, researchers, and educators continue to encourage and monitor good work practices by dental professionals.
-
A Review of Mercury Exposure and Health of Dental Personnel
Natasha Nagpal,Silvana S. Bettiol,Amy Isham,Ha Hoang,Leonard A. Crocombe 한국산업안전보건공단 산업안전보건연구원 2017 Safety and health at work Vol.8 No.1
Considerable effort has been made to address the issue of occupational health and environmental exposure to mercury. This review reports on the current literature of mercury exposure and health impacts on dental personnel. Citations were searched using four comprehensive electronic databases for articles published between 2002 and 2015. All original articles that evaluated an association between the use of dental amalgam and occupational mercury exposure in dental personnel were included. Fifteen publications from nine different countries met the selection criteria. The design and quality of the studies showed significant variation, particularly in the choice of biomarkers as an indicator of mercury exposure. In several countries, dental personnel had higher mercury levels in biological fluids and tissues than in control groups; some work practices increased mercury exposure but the exposure levels remained below recommended guidelines. Dental personnel reported more health conditions, often involving the central nervous system, than the control groups. Clinical symptoms reported by dental professionals may be associated with low-level, long-term exposure to occupational mercury, but may also be due to the effects of aging, occupational overuse, and stress. It is important that dental personnel, researchers, and educators continue to encourage and monitor good work practices by dental professionals.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
